Slush-pump valve



May 28, 1929. 7 E. was ET AL 1,714,740

SLUSH PUMP VALVE Filed April 18, 1927 f 11 1% 16 -1z if I 1 ff 30 24 I 19 00 37 g; ,6 L

33 3 Z3 1 f JI- /l\ r I W \z/ z is;

. valves, and refers more particularl I Patented May 28, 1929;.

PATENT OFFICE".

EDWARD TIMBS, OF LOS ANGELES, AND LEWIS E. ZEBIBE, OF MONE'I'A, CALIFORNIA,

ASSIGNORS TO THE NATIONAL SUPPLY COMPANY OF'DELAWARE, NEW YORK,-

N. Y., A CORPORATION OF DELAWARE.

sLusH-Pm VALVE. I

Application filed April 18 ump to a self-cushioning slush pump valve aving mounted in the valve head a ring of resilient material having a cored interior.

\Slush pumps are especially built for use in' connection with rotary drilling outfits for the purpose of pumping slush or rotary mud through the rotary drill stem. The pumps are made with large valve areas so as to provide direct water passages to efli ciently handle the slush or rotary mud of varying consistencies. They are designed to handle water containing a large amount ,of grit and sand and ofi'er an unobstructed passage to the fluid. 1

It is an object of this invention to provide a. valve for use in slush-pumps which This invention relates to slash is self-cushioning and is provided witha vention.

cored ring of resilient material seated in the valve head in position to engage the water valve seat to cushion the .valvehead on the valve seat.

Other objects and advantages of this invention, it is believed, will be apparent from the following detailed description of a preferred embodiment thereof, as illustrated .in the accompanying drawings; In the drawings:

Figure 1 is a fragmental section of a portion of a slush pump illustrating slush pump valves as embodying this invention mounted therein,.and illustrating one of the valves in substantially vertical mid-section.

Figure 2 is an enlarged fragmental section of a slush pump valve embodying this'in- In the preferred embodiment of this.in-. vention, illustrated in the drawings, 1 illustrates a fragment ofa slush. pump having water passages 2 formed therein. Mounted 'within the passages 2 are tapered valve sleeves or.seats.3, tapered'on their exterior eri he 4 to en age within the' ta' ered ecti zm of the li htly 1. The passages 2 communicate above the valve seats 3 with fluid passages 6 which may be either the inlet or outletvpassages of the slush pump.

-. Means are provided for maintaining'the self-cushioning slush pump valves in position, which means preferably com rise a stud 7 which is screw-threaded-to t e cen tral web 8 of the body 1 and is provided with a cross head 9 having bolt engaging 1927. Serial' n .'1s4,557..-

portions 10 which fit within; cesses 11 formed in the caps 12. The caps 12 are maintained seated within-the annular recesses 13 formed in the bodyl' by means A of the stud 7 and cross head 9.-

Secured within bores '14 formed in the caps 12, by means of screws 15-, are sleeves 16. Thesleeves 16 are provided with cir:

cumferential flanges 17 whichri lower edges 18 of thecaps 12., Slidably mounted within the sleeves 16 are water arcuate' re-v engage 'the valve stems 19 upon which valve heads-20 are mounted. Winged valve guides 21' are mounted upon the valve stems lt) and are maintained in position by means of a washer I 22 and water valve stem nut.23 which is screw-threaded to the endof the water valve stem 19.

Interposed between the upper surface of the guide 21 and valve head 20- is a cored ring 24, whichlis'preferably formed of a resilientmaterial, such as rubber or a 'com pplsition of rubber and canvas, or the like.

and is maintained in position 'by means of the'valve guide 21 which clamps the same within the recess 25. The cored ring 24 is formed with an interior core 26. The

core 26 formed aircushion within the ring 24; The cored ring 24:: ex ends outwardly beyond the valve guide 21 in the valve head 20 in position to e cored ring24 is mounted within an a nnular recess 25 formed in the valve head 20 in the ring -.24'provides an engage the'arcuate seat 27 .of the valve seat '3. V

Meansare provided for limiting the downward movement of the valve, which means preferably comprise a circumferential shoul der 28 formed at the lower end of the valve sleeve 3,- which acts as a limit stop to engage the lower end 29 of the-guide 21.

v Secured to or formed integral with the guide 21 is a. ring 33 which is adapted to engage the circumferentially extending shoulder 28 formed within the valve sleeve 3. The ring 33 provides a contact surface at the ends of the guide 21 to take up the poundingaction of the same on the shoul- I der 28. a

' Means are-provided for :yieldably urging the valve head 20'toward' the valve seat 3, which means preferably comprise a compression spring '30 which is mounted upon the valve stem' 19 and is engaged at .its lower end withinan arcuate recess 31 formed in the upper surface of the head 2Q and engages at its opposite end the under surface 32 of,

the circumferential flange 16 of the sleeve '15. Having fully described our invention, it

is to be understood that-we do not wish tobe limited to the details herein set forth, which may obviously be varied without departing from the spirit of our invention as set forth in the appended claims.

We claim:

'1. In a device of the class described, the

' combination of a valve sleeve, a valve head,

a valve guide, a. cored rmg of resilient material, the cored ring being seated inan annular recess formed in the valve head intermedlate the valve head and valve guide and providing a cushion between the valve head and valve sleeve, the valve sleeve being provlded with aninteriorly extending circumferential shoulder against which the end of the valve guide engages.

2. In a device of the class described, the

combination ofa valve sleeve, avagive head,

a valve guide,.a pneumatically core ring of resilient mate-rial interposed between the valve head and. valve' guide and adapted to engage the upper end of the valve sleeve, :1.

' ring scured to the valve guide at the lower end thereof in position to engage a circum- 'ferentially extending. shoulder formed in the valve sleeve.

3'. In a device of the class described, the

combination of afvalve sleeve forming avalveseat at lts upper end, a valve head, a.

and means secured to the valve stem for-- clamping the guide to the head to secure said ring in position, a ring secured tothe I valve guide atthe lower end thereof in position to engage a circumferentially extending" valve guide to the valve head to permit shoulderformcdin the valve sleeve to compress the valve head towardjthe valve guide and compress the pneumatically cored ring to provide a resilient cushion between the valve seat and said head.

4. In a device of the class described the combination of a valve sleeve, a valve head,

7 a valve guide, a pneumatically cored ringof resilient material interposed between the valve headand valve guide and adapted to engage the upper end of the valve sleeve, a

combination of a valve sleeve, a valve head, a valve guide, a pneumatlcally cored mug of resilient material interposed between the' valve head and valve guide and adapted to engage the upper end of the valve sleeve, means for securing the valve guide to the valve head to permit relative movement of the valve guide and valve head and stop means adapted to be engaged by the valve guide.

6. In a device of the class described, the combination of a valve sleeve, a valve head, a valve guide, a ring of resilient material seated in an annular recess formed in the valve head intermediate-thevalvehead andvalve guide, the valve-sleeve being provided with an 1nteriorly"eircumferential shoulder against which the end of the valve guide is adapted to enga e. I

7. In a device '0? the class described, the combination of a valve sleeve,-a valve head, a valve guide, a ring of resilient material interposed between the valve head and valve guide and adapted to engage the upper end of the valve sleeve, a ring secured to thevalve guide at the lower end thereof in position to engage a circumferentially extending shoulder formed in the valve sleeve.

8. In a device of the class described, the combination of a'valve sleeve, a valve head, a valve guide, a ring of resilient material interposed between the valve head and valve guide and adapted toengage theup'per end,

of the valve sleeve, means for securing the relative movement of the valve guide and .valve head, and stop means'adapted to be engaged by the valve guide.

" Signed at Torrance, California, this- 5th day of April, 1927.

. EDWARD-TIMES! .LE wI s ZERBE. 

